Attached please find a copy of the specification sheets for the adjustment parts sizes for the four barrel carburetor that we are currently using in production in our V-8 engines.

We would like to suggest that this be reviewed by the mechanics in your organization, together with the Top release 55-25 - S&M "Servicing the 1955 Chevrolet Eight Cylinder Two Barrel Carburetor", and Top 55-26 - S&M entitled "Servicing the 1955 Chevrolet Eight Cylinder Four Barrel Carburetor".

The tools, that will be necessary to adjust the four barrel carburetor, were included in your last essential tool order under the number J-6040.

We believe that this will help to clarify servicing the Four Barrel Carburetor and insure your owners peek performance in engine tune-up.